Overview

• The SDEX2M2 Adapter project’s GitHub page provides current PCB layouts, component sourcing details, and development progress.
• The design taps the Switch 2’s MicroSD Express slot to expose a PCIe Gen3 x1 interface using the NVMe protocol without any protocol translation.
• Users can achieve data transfer speeds of up to around 1 GB/s, matching the limits of a single PCIe Gen3 lane.
• Developers warn that only low-voltage, low-power M.2 2230 NVMe SSDs should be used to prevent damaging the console.
• The adapter cannot be used with the original Switch and its limited bandwidth makes eGPU applications impractical without extensive further modification.